Fort Naco, Camp Naco, or Fort Newell began as a camp in the SouthwestUnited States, on the outskirts of Naco, Arizona as part of the Mexican Border Project. Over time adobe and wooden buildings were constructed to house the garrison along with other permanent structures.

Fort Naco others call it Camp Naco or Fort Newell, was one of the last forts built by the United States in continental territory and is the only remaining border fort out of several that were constructed during the Mexican Revolution. Soldiers were first stationed in Naco in November 1910 and remained in the community due to continued fighting across the border, including the Battle of Naco in 1913 and the later Siege of Naco in 1915 in Sonora. Subsequent to Pancho Villa’s attack on Columbus, New Mexico in 1916, Naco was a staging area for American troops protecting the border. Camp Naco was constructed in 1917 as part of the Mexican Border Project. It was the headquarters of the 1st Infantry Regiment of the Arizona National Guard. As of 2010, the barracks of the fort still stands and has partially been restored.[1]